Air compressor



-Jam 19, W32. (,3. WAlNWR IGHT 1,842,303

AIR COMPRESSOR Filed April 25, 1950 2 Sheets-Sheet 1 INVENTOR wn'NEss: ATTORNEY CZ. WAINWRIGHT AIR COMPRESSOR Jan. 19, 1932.

2 Sheets-Sheet 2 Filed April 25, 1950 INVEHTOR ATTORNEY WITNESS:

Patented Jan. 19, 1932 PATENT OFFICE CHARLES WAINWRIGHT, F ERIE, PENNSYLVANIA AIR COMPRESSOR Application filed. April 25, 1930. Serial No. 447,314.

This invention relates to air compressors of the vertical type, an object being to provide a compressor wherein the oil for lubricating the various parts will be cooled by the cooling system of the compressor and will thus be kept in condition for proper lubrication. I

To this end, the invention provides a water cooled compressor of novel construe tion, wherein oil introduced into the crank case or oil reservoir, is directed against the water jacket of the compressor and cooled, and is thereafter distributed to the various parts, so that the temperature of the oil when it reaches the parts to be lubricated, will be at a proper degreeto ensure proper lubrication. j

' With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings: V Figure 1 is a vertical sectional view partly in elevationand illustrating a compressor constructed in accordance with the invention.

Figure 2 is a view partly in elevation and v partly in section looking at the end or the compressor.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the compressor which is shown as of the vertical two cylinder type, may include one or more cylinders. The compressor is mounted on a base 10 and includes cylinders 11 which are surrounded O surmounted by a water cooled head 13 between which and the adjacent end of the cylinders is interposed a valve plate 14. This plate carries the intake valves 15 and the exhaust valves 16 and forms the subject matter of a separate application.

Operating within the; cylinders 11 are pistons 17 which are connected by means of rods l8vwith a crank shaft 19. The rods 18 are connected with the pistons 17 through the medium of wrist pins 20, while the bearby a water jacket '12, the cylinders being 1 ports 38, certain of these ings of the connecting rods which receive the crank shaft are indicated at 21. i j

The crank shaft 19 operates in main bearings 22 and these bearings are provided with 1 oil pockets23. The pockets 23 communi- 5 vcate with the bearings by means or ports 24, sothat oil may be fed from the pockets 23 into these bearings. Ports 25 are provided in the bearings of the wrist pins 20 so that these bearings may receive proper lubrication. The crank shaft 19 operates within the crank case 26 which forms an oil reservoir, oil being introduced into this reservoir, through a filling neck or breatherpipe 27 which is normally closed by a cap 28. The

oil reservoir or crank case contains oil pits 29 which are arranged in the path of the connecting rod bearings 21, so that these bear-- ings will enter these pits for the supply of oilto said bearings through ports 30. In

' addition, the bearings 21 pass through the pits 29 and splash or throw oil upward into the pistons to lubricate the wrist pins 20 through the ports 25.

Mounted upon the crank shaft 22 is a fly wheel 31 which operates within a fly wheel chamber 32. The bottom of the chamber 32 is on a plane below the bottom of the crank case 26, so that oil from the crank case will flow into the chamber 32 through the passage 33. As the fly wheel 31 rotates through the oil in the chamber 32, the oil will be picked up and received within a pan 34 provided in the top of the chamber 32. From this pan, the oil will be directed into an oil chamber 35, the pan 34 having a discharge spout 36 for this purpose.

The chamber 35 surrounds the cylinders- 11 and "a portion of the walls of this chamber is formed by a portion of the walls of the water jacket 12 as shown at 37 Oil within the chamber 35 will thus be subjected to the cooling action of the water within the;

jacket 12. v a r 'The oil chamber 35 is in communication with the oil reservoir or crank case through ports directing the oil into the pockets 23so that it will reach:

the main bearlngs as previously descrlbed.

The oil Will pass through these main bearings, and be returned to the crank case through ports 39.

In order to supply oil to the oil pits 29, the invention provides pipes or conduits 40. The upper ends of the pipes or conduits are in communication With the oil chamber While the lower ends are positioned to direct the oil into the pits 29 and When these pits overflow, the surplus oil Will enter the oil reservoir and pass to the fly Wheel chamber through the port 33.

A proper amount of oil is introduced into the crank case through the pipe 27 to lubricate the various bearings. This oil of course becomes heated and thin through use. The thin heated oil will pass into the fly Wheel chamber and Will be picked up by the fly Wheel and deposited in the receiving pan 34. From this pan the oil will flow into the oil chamber 35 and Will contact With the portion 37 of the Water jacket 12 so as to be cooled. The cooled oil Will pass into the crank case through the port .38 into pipes 40 for reuse. This cycle of operation is repeated during the operation of the compressor.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall Within the scope of the appended claims.

Having described the invention What is claimed is 1. In an air compressor, a compression cylinder, a Water jacket surrounding the cylinder, an oil reservoir, a fly Wheel chamber in communication with the oil reservoir to receive oil from the latter, a receiving pan Within the flywheel chamber, a fly Wheel operating Within the fly wheel chamber to lift the oil from the bottom of said chamber to said pan, means to direct oil from the pan to the Walls of the Water jacket to cool the oil and means to return the cooled oil to the oil reservoir.

2. In an air compressor, a compression cylinder, a Water jacket surrounding the cylinder, an oil reservoir, a fly Wheel chamber in communication With the oil reservoir to receive oil from the latter, a receiving pan Within the fly Wheel chamber, a fly Wheel operating Within the fly Wheel chamber to lift the oil from the bottom of said chamber to saidv pan, means to direct oil from the pan to the Walls of the Water jacket to cool the oil, means to return v he cooled oil to the oil reservoir and direct said oil to the main bearings of the compressor.

3. In an air compressor, a cylinder, a Water jacket surrounding the cylinder, a piston operating Within the cylinder, a crank case in communication with said cylinder and defining an oil reservoir, a crank shaft operatlng W1th1n the crank case, a rod connecting the crank shaft and piston, an

oil pit located Within the crank case in the path of movement of the connecting rod bearing, a fly Wheel chamber communicating With the crank case and receiving oil from the latter, a fly Wheel mounted upon the crank shaft Within the fly Wheel chamber .to lift the oil from the bottom of said chamber, means to direct the lifted oil from the fly Wheel against the Walls of the Water jacket to cool said oil, means to return the cooled oil to the crank case, means to direct some of the cooled oil to the oil pit and means to direct some of the cooled oil to the crank shaft bearings.

In testimony whereof I atflx my signature.

CHARLES WAINWRIGHT. 

